We investigate theoretically the Čerenkov-type second-harmonic generation in two-dimensional bulk nonlinear photonic crystal with longitudinal modulation of the χ(2) nonlinearity. We show that in this scheme the Čerenkov ...

We study theoretically the Čerenkov-type second-harmonic generation by a Gaussian beam in quadratic nonlinear
media with periodically reverted ferroelectric domains. In particular, we consider the role of fundamental ...